Efficient Process Of Pyrite
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- Efficient Process Of Pyrite
In this study, we proposed a highly efficient and environmentally friendly PMS/pyrite-precipitation process for Cr(III)-citrate removal. Initial pH, pyrite dosage, peroxymonosulfate (PMS) concentration, and the coexisting anions (e.g., SO 4 2-, Cl-, and NO 3-) affected the removal rate of Cr(III)-citrate. Under optimal conditions (i.e., initial ...
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To better understand the growth process and mechanism of hexapod-like pyrite nanosheet clusters, a series of experiments were performed by changing the reaction time under different temperatures, and their morphological evolution were investigated in detail (Figs. S1–S5).The required minimum reaction times for formation …
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Finally, a clean and efficient comprehensive utilization process of pyrite concentrate combined beneficiation and metallurgy was proposed as shown in Fig. 14. The pyrite concentrate with high impurity content is firstly pyrolyzed under nitrogen to obtain elemental sulfur and pyrolysis slag.
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An efficient reductant, pyrite, for efficient recovery of iron from iron-bearing tailing was proposed. • After magnetization roasting, most Fe 2 O 3 in the tailing was reduced to Fe 3 O 4, and the mechanism was clarified.. Iron concentrate with a grade of 61.03% and a recovery of 94.70% were obtained.
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DOI: 10.1016/j.cej.2022.140914 Corpus ID: 254715868; Efficient Recovery of Valuable Metals from Spent Lithium-Ion Batteries by Pyrite Method with Hydrometallurgy Process @article{Su2022EfficientRO, title={Efficient Recovery of Valuable Metals from Spent Lithium-Ion Batteries by Pyrite Method with Hydrometallurgy Process}, author={Fanyun …
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Pyrite is increasingly employed as a substrate in constructed wetlands (CWs), exhibiting outstanding denitrification and phosphorus removal efficient, and …
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Pyrite (FeS 2) is an abundant sulfide-associated iron mineral that exists in the earth.In this study, the pyrite/oxone process was demonstrated to be an effective approach for the catalytic degradation of propanil, where more than 90% decay ([propanil] 0 = 0.01 mM) was achieved within 15 min. Typically, the effects of various experimental …
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Semantic Scholar extracted view of "Pyrite nanoparticles derived from mine waste as efficient catalyst for the activation of persulfates for degradation of tetracycline" by F. Rahimi et al. ... bastien Royer and Allahbakhsh Javid and Ali Mashayekh-Salehi and Moslem Jafari Sani}, journal={Journal of water process engineering}, year={2020}, …
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Efficient heterogeneous photodegradation of Eosin Y by oxidized pyrite using the photo-Fenton process. Author links open overlay panel Wanjia Zhang a b c, Xu Jiang a b c, John Ralston d, Jian Cao a b c, ... Pyrite (FeS 2) is the most common sulfide gangue mineral and displays excellent photoelectric properties. We chose pyrite as a …
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Request PDF | On Jan 1, 2024, Zihang Liu and others published A highly efficient process to enhance the bioleaching of spent lithium-ion batteries by bifunctional pyrite combined with elemental ...
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DOI: 10.1016/j.jclepro.2022.134348 Corpus ID: 252642998; Green and short smelting process of bismuth sulphide concentrate with pyrite cinder @article{Jin2022GreenAS, title={Green and short smelting process of bismuth sulphide concentrate with pyrite cinder}, author={Wei Jin and Shenghai Yang and Chao-bo Tang and Yun Li and Cong …
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Considering the potential negative environmental impacts of current processes, it is highly important to develop an efficient leaching process for the preferential extraction of lithium. Pyrite (FeS 2) is a common sulfide mineral present in nature, and undergoes thermal decomposition to produce S 2 gas.
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A novel pH-responsive flocculant for efficient separation and recovery of Cu and Mo from secondary resources via selective flocculation-flotation
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To theoretically study the possible chemical reaction involving pyrolusite and pyrite in sulfuric acid solution, the Gibbs free energy (ΔG)-T diagram (Fig. 1 (a)) and E-pH diagram (Fig. 1 (b)) were plotted using Factsage7.2 software.It can be observed that MnO 2 can not react with sulfuric acid since ΔG > 0. Moreover, From Fig. 1 (b), it is evident that …
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In this study, we proposed a highly efficient and environmentally friendly PMS/pyrite-precipitation process for Cr(III)-citrate removal. Initial pH, pyrite dosage, peroxymonosulfate (PMS) concentration, and the coexisting anions (e.g., SO 4 2-, Cl-, and NO 3-) affected the removal rate of Cr(III)-citrate. Under optimal conditions (i.e., initial ...
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This Review provides a comprehensive and systematic overview of the role of pyrite in the Anammox process. It offers the possibility of coupling pyrite with Anammox to achieve a …
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Hexapod-like pyrite nanosheet cluster materials were facilely synthesized at 25–220 °C. ... (VI) removal process. The removal efficiency of Cr(VI) was still after 5 cycles. Our study shows that the hexapod-like pyrite nanosheet clusters material could be acted as a recyclable and promising mineral material with high activity, stability ...
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DOI: 10.1016/j.hydromet.2020.105519 Corpus ID: 228892770; Efficiency and sustainable leaching process of manganese from pyrolusite-pyrite mixture in sulfuric acid systems enhanced by microwave heating
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Bioleaching technologies have been shown to be an environmentally friendly and economically beneficial tool for extracting metals from spent lithium-ion batteries (LIBs). However, conventional bioleaching methods have exhibited low efficiency in recovering metals from spent LIBs. Therefore, relied on the sustainability principle of using waste to …
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Pyrite has a wide distribution in the Earth's crust, and the major active component of natural pyrite is ferrous disulfide (FeS 2) [11], [12]. It is demonstrated that FeS 2 only in aqueous solution is able to simultaneously generate HO• and H 2 O 2 according to Eqs. (10), (11), and this process can be accelerated by dissolved oxygen …
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The recovery efficiency of insoluble manganese exceeded 86%, and the leaching efficiency of iron was lower than 1% under optimal conditions (the pyrite/EMR …
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A green and short smelting process of bismuthinite concentrate with pyrite cinder was proposed. • The reaction mechanism and phase transformation laws of Bi 2 S 3 –Fe 2 O 3 –C system was identified.. S in bismuthinite is fixed as FeS to eliminate low concentrate SO 2 gas emission.. The valuable metal distribution behavior was identified …
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The dissolved Fe 2+ from pyrite can serve as catalyst in AOPs to achieve effective degradation of refractory organic pollutants. Oxygen and Fe 3+ are two …
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Semantic Scholar extracted view of "Efficient pyrite activating persulfate process for degradation of p-chloroaniline in aqueous systems: A mechanistic study" by Yongqing Zhang et al. ... {Efficient pyrite activating persulfate process for degradation of p-chloroaniline in aqueous systems: A mechanistic study}, author={Yongqing Zhang and …
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Mechanism of efficient removal of nitrate and phosphate by PSAD system. During an 80-day study of a PSAD reactor, it was discovered that the denitrification process produced H + that dissolved pyrite and released Fe 2+. This led to increased denitrification rates in the PSAD reactor due to the combined activity of Thiobacillus and …
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Efficient recovery of valuable metals from spent Lithium-ion batteries by pyrite method with hydrometallurgy process. Author links open overlay panel Fanyun Su a, Xiangyang Zhou a, Xiaojian Liu a, Juan ... Although the pyrogenic process is efficient and short, its deficiencies of high energy consumption and high pollution have limited its ...
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The higher efficiency of electro-Fenton-pyrite is explained by self-regulation of soluble Fe2+ and pH to 3.0 from pyrite catalyst favoring larger ·OH generation from Fenton's reaction. ... Formation and evolution of short-chain carboxylic acids during the EF-pyrite process of 0.20 mM tetracycline in 0.050 M Na 2 SO 4 and 2.0 g L −1 pyrite ...
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Semantic Scholar extracted view of "Oxidized pyrite as an efficient Fenton reagent to generate active species for the degradation of carbamazepine in a wide pH range" by Jinli Zhai et al. ... A green solar photo-Fenton process for the degradation of carbamazepine using natural pyrite and organic acid with in-situ generated H2O2.
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In this work, pyrite/rhodochrosite (Py x Rh y) composite synthesized from natural pyrite and rhodochrosite to remediate Cr(VI) containing wastewater was systematically investigated and evaluated.Results show that pyrite/rhodochrosite (1:1) showed the best Cr(VI) removal performance. XRD showed that emergence of MnS and …
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In the pyrite/PAA process, TC can be completely removed within 30 min under neutral conditions by the synergy of homogeneous and heterogenous Fe(II) species. CH 3 C(O)OO• is the main radical generated from the pyrite/PAA process responsible for TC abatement. The excellent activation properties of pyrite can be attributed to the …
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Abstract Recently, with the decrease in the quality of manganese resources, the efficient use of low-quality manganese ore resources has attracted widespread attention. At present, pyrite is often used as reducing agent to recover Mn(IV) in industrialization. However, the passivation of pyrite in the leaching reaction process will lead to a decreased reaction …
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